NETA 3 EXAM 2025/2026 QUESTIONS 4
AND ANSWERS 100% PASS
What color test decal you affix to a protective device with a minor mechanical deficiency that
does not affect its fault detection and operation? - ANS Yellow
A new 69kV-35kV power transformer filled with FR3 is being placed into service, what is the
minimum acceptable dielectric breakdown voltage for a transformer of this voltage class when
tested in accordance with ASTM D1816 (2mm gap)? kV - ANS 50
The _____ winding is made of many turns of small wire and is located at the top of the stator
core. - ANS Start
Excitation-current tests of large dry-type transformer windings are required for maintenance
testing but not acceptance testing.
True or false - ANS True
The Boolean expression for a 3-input AND gate is ______. - ANS Q=ABC
What would be the appropriate acceptance test voltage for a withstand test on a new 8.25kV,
1200A rated metal-enclosed interrupter switchgear per NETA standards? kVAC/kVDC -
ANS 14/20
For providing short circuit protection, a fuse rated in continuous amperes shall not exceed
_____ times the ampacity of the conductor. - ANS 3
pg. 1 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED
, n a DC circuit, fully charged capacitors act as - ANS Open circuits
What is the maximum acceptable value for Total Decomposition Products in a SF6 circuit
breaker that has been in service for 3 years?_____ppm - ANS 50
True or false Contactor coils are present in manual motor starters: - ANS False
When testing new HV oil circuit breakers per NETA standards, which inspection is optional? -
ANS Trip/close coil current signature analysis
In a circuit containing resistance and inductance, the time required for current to reach its full
value involves which of the following? - ANS T=L/R
In a typical stepped distance protection scheme, Zone 2 is set to protect _____ of the
transmission line with a time delay of 0.25-0.4 seconds - ANS 120%
What is the minimum acceptable megohm value for a metal-oxide surge arrester rated 36kV
with an MCOV rating of 29kV per NETA standards? _____M
100000 - ANS
battery bank has batteries where the terminals are bulged and the seals broken. This is likely
from: - ANS Increasing plate growth
When a grounding electrode conductor or bonding jumper is connected to a concrete-encased
electrode (does not extend on to other types of electrodes that require a larger size of
conductor), the grounding electrode conductor is not required to be larger than _____ copper
wire - ANS 4
NETA-MTS specifies electrical tests for medium-voltage SF6 switches. Which of the following is
an optional test per this standard - ANS Insulating gas sample
pg. 2 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED
AND ANSWERS 100% PASS
What color test decal you affix to a protective device with a minor mechanical deficiency that
does not affect its fault detection and operation? - ANS Yellow
A new 69kV-35kV power transformer filled with FR3 is being placed into service, what is the
minimum acceptable dielectric breakdown voltage for a transformer of this voltage class when
tested in accordance with ASTM D1816 (2mm gap)? kV - ANS 50
The _____ winding is made of many turns of small wire and is located at the top of the stator
core. - ANS Start
Excitation-current tests of large dry-type transformer windings are required for maintenance
testing but not acceptance testing.
True or false - ANS True
The Boolean expression for a 3-input AND gate is ______. - ANS Q=ABC
What would be the appropriate acceptance test voltage for a withstand test on a new 8.25kV,
1200A rated metal-enclosed interrupter switchgear per NETA standards? kVAC/kVDC -
ANS 14/20
For providing short circuit protection, a fuse rated in continuous amperes shall not exceed
_____ times the ampacity of the conductor. - ANS 3
pg. 1 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED
, n a DC circuit, fully charged capacitors act as - ANS Open circuits
What is the maximum acceptable value for Total Decomposition Products in a SF6 circuit
breaker that has been in service for 3 years?_____ppm - ANS 50
True or false Contactor coils are present in manual motor starters: - ANS False
When testing new HV oil circuit breakers per NETA standards, which inspection is optional? -
ANS Trip/close coil current signature analysis
In a circuit containing resistance and inductance, the time required for current to reach its full
value involves which of the following? - ANS T=L/R
In a typical stepped distance protection scheme, Zone 2 is set to protect _____ of the
transmission line with a time delay of 0.25-0.4 seconds - ANS 120%
What is the minimum acceptable megohm value for a metal-oxide surge arrester rated 36kV
with an MCOV rating of 29kV per NETA standards? _____M
100000 - ANS
battery bank has batteries where the terminals are bulged and the seals broken. This is likely
from: - ANS Increasing plate growth
When a grounding electrode conductor or bonding jumper is connected to a concrete-encased
electrode (does not extend on to other types of electrodes that require a larger size of
conductor), the grounding electrode conductor is not required to be larger than _____ copper
wire - ANS 4
NETA-MTS specifies electrical tests for medium-voltage SF6 switches. Which of the following is
an optional test per this standard - ANS Insulating gas sample
pg. 2 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED
